Not sure if this should be under "Tanks" or "German Tanks."
A tiny bit more light on the subject:
Possibly dated Sept 16, 1916. But Königsberg (now Kaliningrad) makes a lot more sense than Riga.
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.
Maybe under reference..
